Electric elevator.



PATENTED FEB. 28, 1905.

2 SHEETS-SHEET 1.

E. H. VOGEL. ELECTRIC ELEVATOR. APPLICATION FILED APR. 11, 1904.

PATENTED FEB. 28, 1905. E. H. 'VOGEL.

ELECTRIC ELEVATOR.

APPLICATION FILED APR. 11 1904.

2 SHEETS-EHEET 2.

no. veaeoe.

llrurrisn detainee Patented February 28, 1905.

ERNESTI. llLVOlvrEL, OF NEW YORK, N. Y.

IELECTiRlG IELllEWfllTOFl.

SPECIFICATION forming part of Letters Patent No, 783,809, dated February 28, 1905.

Application filed April 11, 190i. Serial No. 202,563.

To It 10/1/0717 if; 'IIMLII/ (3071166772:

lie it known that .I, ERNEST ll. V oo n L, a citizen of the United States, residing in the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Impromments in Electric Elevators, of which the following is a specilication suiiiciei'it to enable others skilled in the art to which the invention appertains to make and use the same.

My invention relates to elevators, dumbwaiters, lifts, &c., in which a screw-drum actuated internally is employed as a means of raising and lowering the car or platform as set forth inmy concurrent application for patent, Serial No. 181,281, liled November id, 1903.

My present improvements are designed to simplify and cheapeu the structure, to reduce frictional resistance, and to reduce the noise of running to the minimum.

The invention consists in the construction, combination, and arrangement of parts hereinafter described and claimed specifically.

in the accompanying drawings, Figure 1 is a horizontal section of ad umb-waiter and ad joining parts constructed according to my improven'ients. Fig. 21's a horizontal section upon plane of line 2 2, Fig. 3. Fig. 3 is a vertical section upon plane of line 3 3, Fig. 1, certain parts being shown in elevation; Fig. at, a sectional elevation upon plane of line 4: a, Fig. 1. Fig. 5 is a detail view illustrating the action of the upper and lower guide-rollers.

P represents the floor or platform of a lift, car, or dumb-waiter D, the drawings by way of illustration showing my improvements as applied to the latter structure.

To the under side of the platform P is rigidly secured a stud S, to the lower portion of which in turn is rigidly secured the crosshead U, preferably formed with a central an nular spacing-shoulder c. ()n this spacing shoulder a rests the hub (7/ of the screw-drum A, rotatable upon the stud S. A washer s is preferably interposed between the hub a and the flanged. base a of the stud S.

The screw-drum A is connected by spokes (1/ or otherwise with the hub (0, provided with an annular tread or track a for the bearingsaid cross-head U.

roller B, mounted axially at the rear of the platform 1. This bearing-roller ll distributes the weight to the drum A, preventing lateral strain upon the stud f5 and steadies the platform P.

The periphery of the drum A is formed with the spiral way or track 1), as in my concurrent application hereinbefore referred to, said way or track 7) engaging with the supporting-wheels W \V, axially mounted upon the upright U, as heretofore, but with this exception in the present case, that but a single vertical series of such supporting-wheels \V is employed.

The car or platform l. is sustained against any tendency to lateral rotation on the screwdrum A. by means of guide-rollers H G engaging with stationary rails it in the elevator shaft. These guide-rollers (-i G also protect the stud S against undue lateral strain by reason of uneven distrilmtion of load on the platform.

The screw-drum A is rotated substantially as in my concurrent application before referred to, the operative parts, however, in this case being suspended upon the bottom of the platform P by the single central stud 5. Thus the brackets m. in of the electric motor M are secured rigidly to the arms e 0* of the cross-head (I, while the intermediate gears 1' 11 are mounted on the arms a c of The intermediate gears a" vi mesh into the annular rack of on the interior of the drum on one side and with the driving-pinion m/ on the armature-shaft of the motor M on the other.

It will be seen that my presentconstruction and arrangement of parts is simple, and therefore cheap, while experimeliital tcsthas shown it to be effective and comparatively noiseless.

W hat l claim as my invention. and desire to secure by Letters Patent, is

1. In an elevating device, the combination of a platform, a stud suspended fron'r the under side thereof, a cross-head rigidly secured to said stud, an electric motor suspended upon said cross-l'iead and formed with a drivingpinion upon its armatru-e-sha ft, a pin-ipherallythreaded screw-drum suspended rotatably upon said stud. and formed with an internal annular rack, intermediate gearing mounted upon the said cross-head and meshing with the driving-pinion on the electric motorand with the said internal annular rack on the drum, and a series of vertically-arranged supporting-rollers for engaging the peripheral thread upon said drum, for the purpose described.

2. In an elevating device, the combination of a platform, a stud suspended from the under side thereof, a crosshead rigidly secured to said stud, an electric motor suspended upon said cross-head and formed with a drivingpinion upon its armature-shaft, a peripherallythreaded screw drum suspended rotatably upon said stud and formed with an external annular tread and with an internal annular rack, a bearing-roller axially supported on the platform and engaging the said external annular tread on the drum, intermediate gearing mounted upon the said cross-head and meshing with the driving-pinion on the electric motor and with the said internal annular rack on the drum, and a series of verticallyarranged supporting-rollers for engaging the peripheral thread upon said drum for the purpose described.

3. In an elevating device, the combination of a platform, a stud suspended from the under side thereof, a cross-head, rigidly secured to said stud, an electric motor suspended upon said cross-head and formed With a drivingpinion upon its armature-shaft, a peri pheral lythreaded screw drum suspended rotatably upon said stud and formed with an internal annular rack, intermediate gearing mounted upon the said cross-head and meshing with the driving-pinion on the electricv motor and with the said internalannular rack on the drum, vertical guide-rollers supported axially upon the platform and engaging with vertical guide-rails in the shaft, said vertical guiderails, and aseries of vertiCally-arranged supporting-rollers for engaging the peripheral thread upon said drum for the purpose described.

4. In an elevating device, the combination of a platform, a stud suspended from the under side thereof, across-head rigidly secured to said stud, an electric motor suspended upon said cross-head and formed With a drivingpinion upon its armatureshaft, a peripherallythreaded screw drum suspended rotatably upon said stud and formed With an external annular tread and with an internal annular rack, a bearing-roller axially supported on the platform and engaging the said external ann ular tread on the drum, intermediate gearing mounted upon the said cross-head and meshing with the driving-pinion on the electric motor and With the said internal annular rack on the drum, vertical guide-rollers supported axially upon the platform and engaging with vertical guide-rails in the shaft, said vertical guide-rails, and a series of verticallyarranged supporting-rollers for engaging the peripheral thread upon the said drum for the purpose set forth.

- ERNEST H. VOGEL.

Witnesses:

GEO. WM. MIAT'I, D. IV. GARDNER. 

